I'm fine with the repeated addition. My objection is the OR in your statement. Apparently not. The question was 5x3 and the kid wrote 5+5+5=15 and got marked wrong with no explanation because the teacher wanted 3+3+3+3+3=15. So I guess that you would have had a 50% chance of being marked wrong on a 2nd grade arithmatic worksheet as well, as absurd as that is. Correct answer notwithstanding.

BTW, that's not at all new. We covered multiplication that way in the 3rd grade back in 1975. Memorizing the table was just to make it quicker. I quickly "discovered" the commutative property while looking at the multiplication table and cut my memorization load in half. The part that confused the father was why is 5x3 = 5+5+5=15 "wrong".

As for 37+55, we decomposed that in the '70s as well, but I soon decided the easier decomposition was 37+55= 87+5 = 90+2=92. So I would say that meme was just someone wanting to complain. Of course the "old way" ends up in 30+50+10+2 anyway.

Shut up and memorize was not in practice during the education of the parents of today's students.

NT existed when IBM brought out at least two major versions of OS/2 without such features while NT had them, so... No.

No, but it would let people who care know, and it would let people who potentially care google and find out.

I would tend to assume that if you pay you get more, so it's just a trial version, and this is just an indirect slashvertisement.

I don't think creating a centralized world ID database is going to be a win at this point.

OS/2 had no security features needed for multiuser support. It might as well have been classic MacOS. Citrix had a multiuser version of OS/2 with security tacked on, but it wasn't a realistic solution and was never popular. Building an OS without security was the moronic decision that killed it. Plus IBM never did anything meaningful to promote it so nobody cared. That it was used anywhere (especially in ATMs) was a horrible decision itself because of the lack of security features and has created untold woes. Maybe nobody ever got fired because they bought IBM, but they should have.

It's wrong. The processor has a feature. People will reasonably assume they can use that feature. Then they find out it's disabled.

If that declaration is not in the largest font size used in the materials then it's hidden.

... I of course mean other citations than that quasi-fraudulent British lawsuit that started this nonsense myth back in the early 90ies or so.

No, because a surgeon can tell you WHY he washes his hands and point to the historical evidence for the practice. He won't say "God tells us to wash our hands".

I wouldn't call it a GOOD solution, more a default if nobody comes up with something better.

It would have reduced it to an extent that it would be as good as stopped.

The fact that surgeons today wouldn't think of operating without washing their hands. I never said it was a quick victory.

It was my example. It came from a photograph of the worksheet posted to Reddit by the child's father, who was wondering why the answer was 'wrong'.

Surely you don't expect the 2nd graders to start on Clifford algebras any time soon. They need to learn to walk before they run. Note that by the time you're multiplying vectors and matrices the process involved is sufficiently different from multiplying real numbers that not being commutative is not going to be an issue. I recall my high school math teacher demonstrating non-commutative multiplication. I was not confused in spite of having figured out the commutative nature of simple multiplication in elementary school.

Sure, under the hood, but the end user is more concerned with the application than he is with how it got there.

The speech to text can be nice (even if my phone keeps writing "free cat" when I say FreeCAD), but it clearly has significant limitations. I still can't even guess why my phone can respond to "flashlight on" but fails at "flashlight off".

It's also amazing that it's possible to draw a metal wire thinner than a human hair and even more amazing that it's possible to drill a neat hold through it's width without breaking it, but I really don't have much use for that day to day.

As for image generation, quick, how many fingers am I holding up on my right hand? (hint: not 6).